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THE MOST CURRENT DOCUMENT INFORMATION IS AVAILABLE
FROM YOUR BELL HELICOPTER TEXTRON REPRESENTATIVE.
PRODUCT DATA
JANUARY 2003
Retraction of the landing gear is accomplished by power provided from Hydraulic System
2 (PC2), which also powers the upper half of the cyclic and collective servoactuators.
Placing the LDG GEAR switch in the UP position causes hydraulic pressure to be ported
to the downlock plungers and the retract side of the actuator cylinders, causing the
wheels to retract. The DOWN position relieves pressure from the retract side of each
actuator and ports pressure to the extend sides, forcing the gear to the extended position.
As the gears reach full extension, fluid forced from the retract side of the actuators is
ported to the downlock plungers, temporarily retracting them until the wheels are fully
extended and locked.
If PC2 should fail, the wheels may be extended by the EMER PULL GEAR handle, located
on the right front of the pedestal. When the handle is pulled, hydraulic pressure to the
retract side of the cylinders is relieved, which allows gravity, air loads, and spring pressure
(nose gear only) to force the landing gear to the extended position.
The spring loaded downlock plungers lock the gear into position.
Differential braking is provided by hydraulic actuated disc brakes within each main
wheel, controlled by master cylinders mounted on the pilots' directional control pedals.
The pedals may be pressed individually or simultaneously to apply brakes to the left,
right, or both main wheels. The castering nose wheel does not contain a brake assembly.
The PARKING BRAKE handle is located at the base of the pedestal, and is actuated by
pressing both brake pedals and pulling the handle. This action traps pressure in the
brake valve, locks the brakes, and illuminates the BRAKES caution light. The parking
brake is released by pressing the pedals and allowing the handle to retract.
TOE BRAKES
↑ / ↓
↑ / ↓
↑ / ↓
↑ / ↓
↑ / ↓
PITOT-STATIC SWITCHES
EMER. GEAR RELEASE
↑ / ↓
↑ / ↓
↑ / ↓
↑ / ↓
↑ / ↓
PARKING BRAKE
Summary of Contents for BELL 430
Page 1: ...Product Data ...